Yeah, picked one up in Germany, like it very much, it's the most neutral and 'forward' of the amps I own. Should have built it myself really, it's an easy build but I didn't want to deal with the parts ordering, chassis etc. Have ordered the F4 boards, they're in the mail now, intrigued by the concept of that amp. But I'm diy'ing my own HE-6 tube amp now, still in the calculations phase and I'm taking my time but that's this summer's project.

More importantly, I managed -after some trouble and serious arm-twisting- to actually get my cash back from the ex-member who was supposed to build my F5 clone and did a runner with my (and others') money. Not everybody's been so lucky so far, unfortunately.

Yeah, picked one up in Germany, like it very much, it's the most neutral and 'forward' of the amps I own. Should have built it myself really, it's an easy build but I didn't want to deal with the parts ordering, chassis etc. Have ordered the F4 boards, they're in the mail now, intrigued by the concept of that amp. But I'm diy'ing my own HE-6 tube amp now, still in the calculations phase and I'm taking my time but that's this summer's project.

More importantly, I managed -after some trouble and serious arm-twisting- to actually get my cash back from the ex-member who was supposed to build my F5 clone and did a runner with my (and others') money. Not everybody's been so lucky so far, unfortunately.

That you've gotten your $$$ back is good to hear; wish others luck as well.

Never happened (touch wood), hook it up regularly via the headphone out on my SX-1980 which is said to deliver about 20W into 50 Ohm. Didn't hook it to the speaker taps directly, no need when the headphone out is clearly giving more than enough. Directly wired to my F5 clone, volume control through the preamp section of my DAC..no issues. Ditto with my tube amp. But I always start out real easy and don't push volume to extremes, guess my average listening will be at around 70 dB.

Well, so how many of you have blown a driver? Besides me that is and grizzlybeast?

Hooked it up to my Pioneer SX1050 receiver via the HiFiMan speaker tap box, played about three songs, adjusting tone a bit, playing with the mute switch, turning it up a bit, sounding good................and then dzzzzzzzzzzzzzzzz. Dead left driver. What?

What to do? Contact HiFiMan in NY (Head Direct) in the morning I suppose and send in for repair/replacement? Any keys I need to know?

I think I hold the record for blown drivers. I've done it twice myself and was lucky enough to have a friend blow my third pair.

How did yours happen? I think I threw the loudness switch and the volume was a bit high at the time. It was definitely not cranking tho.

It happened twice with the Lampizator DAC being turned on while the 6s were connected to the amp. Since then, first I turn on the DAC followed by the amp, then connect headphones.

Seems like your DAC has relay mute issues when turned on, it should only have a small to moderate pop as the relay engages. Amp will obviously amplify it making it destructive, get your DAC checked for relay mute.